形容詞 immoral:

1. deliberately violating accepted principles of right and wrong
2. not adhering to ethical or moral principles
   同義詞：base, dishonorable, dishonourable, unethical
3. morally unprincipled
4. characterized by wickedness or immorality
   同義詞：bad
5. marked by immorality; deviating from what is considered right or proper or good
   同義詞：depraved, perverse, perverted, reprobate

1. Contrary to conscience, morality, or law; immoral or wicked.
   不道德的，不正當?shù)牟缓系赖隆⒘贾蚍梢?guī)則的; 不道德的或邪惡的
2. An evil, degrading, or immoral practice or habit.
   不道德行為，惡習邪惡的、墮落的或者不道德的行為或者習慣
3. Some people still think it is immoral to have sex before marriage.
   有些人仍然認為婚前的性行為是不道德的。

im.mor.al

adj.（形容詞）
Contrary to established moral principles.
不道德的：和既定的道德準則相違背的

【引伸】
immor.ally
adv.（副詞）